Air line contamination is a significant cause of transmission shifting issues and solenoid faults in Eaton Endurant transmissions. Often linked to poor vehicle air system maintenance, contamination can lead to recurring problems even after transmission components have been replaced.
Allied Powertrain Group emphasizes the importance of inspecting and maintaining the vehicle’s air system during transmission installation to help prevent premature failures and protect warranty coverage.
Why Air System Maintenance Matters
When an Endurant transmission experiences shifting problems or solenoid faults, replacing the Mechatronic Transmission Module (MTM) alone may not resolve the underlying issue.
If contamination remains in the vehicle’s air system, it can continue to affect transmission operation. Addressing the source of contamination is essential for long-term reliability.
This applies to several transmission models, including:
- Eaton Endurant HD
- Eaton Endurant XD / XD Pro
- PACCAR TX-12
- PACCAR TX-18 / TX-18 Pro
Preventing Air Line Contamination During Installation
Proper vehicle air system maintenance is an important part of installing an Eaton Endurant transmission.
Allied Powertrain Group recommends the following preventive measures:
- Inspect and Replace Air Dryer Components: Regularly inspect air dryer cartridges and filters, replacing them as needed.
- Drain Air Tanks: Remove accumulated water and verify proper air system operation.
- Follow Maintenance Guidelines: Adhere to OEM and air system manufacturer recommendations for inspection and service.
These steps help reduce the risk of contamination-related transmission problems and support dependable operation.
Protecting Your Warranty Coverage
Air system contamination can have significant warranty implications. Allied Powertrain Group’s warranty coverage is void if contamination is found in the air system.
The technical bulletin identifies the following warranty periods:
- Mechatronic Transmission Module (MTM): 12 months
- Main Transmission Box: 24 months
Thorough inspection and documentation of the vehicle’s air system are essential when installing or servicing these transmissions.
Review the Technical Bulletin
Allied Powertrain Group’s technical bulletin includes visual examples of contaminated and uncontaminated air dryer cartridges, along with preventive maintenance recommendations and warranty information.
